Quick update: C2 pintles are 7.6mm = ~0.299" diameter. Nacra are 9mm. Nacra bushings won't work.

Looking at some other off-the-shelf options.

Am considering one of the "easy install" designs with the slit sides (link) These would compress/expand slightly. The one with ID of 19/64" = 0.297" = 7.54mm is darn close.

If I don't use split sides, then will probably go slightly undersized on the flange bushing ID so I can file it out for final fit.

Also - Boat is about an hour away from me, so I'm doing a bit more planning on the front-end so the rework goes as smoothly as possible.